118 AURIS-EUDOLICHOTIS. 



A. PERDIX Pfeiffer. PI. 41, figs. 45, 46, 47, 48, 49. 



Shell perforate, ovate-oblong, solid, closely striate ; whitish, with 

 flames, spots and dots of blackish. Spire conic, the apex rather 

 obtuse ; suture margined. Whorls 5J, but slightly convex, the last 

 about as long as the spire ; base slightly compressed around the nar- 

 row perforation. 



Aperture oblong, showing inside the external coloration ; peri- 

 stome expanded throughout, the columellar margin somewhat 

 vaulted ; columella obliquely folded above, slightly arcuate. (PfrS). 



Alt. 36, diam. 15 ; alt. of aperture 19 mill. (type). 



Alt. 31 mill. (Caracas specimen). 



Agua de Obispo, U. S. Colombia (Funck) ; Caracas, Venezuela 

 (Lansberg). 



Bulimus perdix PFR., P. Z. S., 1847, p. 230 ; Conchyl, Cab., p. 

 147, pi. 39, f. 1, 2 ; Monogr., ii, p. 89; vi, p. 23. PHIL., Abbild., 

 iii, p. 38, pi. 8, f. 3. KEEVE, Conch. Icon., pi. 54, f. 355. MAR- 

 TENS, Binnenmoll. Venezuela's, p. 177. 



Resembles A. midas, a larger shell, in form of the aperture; but in 

 coloration this species is similar to A. euryomphalus. The specimens 

 before me are small (alt. 30, diam. 15 mill.), heavily marked and 

 with five whorls (fig. 47). 



A. DILLWYNIANA Pfeiffer. PI. 42, figs. 62, 63. 



Shell perforate, ovate- oblong, solid; rudely striate and irregularly 

 malleated, scarcely shining; fleshy, dotted and variegated with 

 brownish. Spire convex-conic, the apex somewhat obtuse; suture 

 impressed, margined. Whorls 5, slightly convex, the last a little 

 longer than spire, attenuated and subcompressed at base. 



Aperture slightly oblique, sinuose-oblong ; peristome white, ex- 

 panso-reflexed, the right margin lightly arcuate ; columellar margin 

 dilated above, nearly closing the perforation ; columella with a 

 strong twisted fold. Alt. 39, diam. 16 mill. (Pfr.). 



Andes of New Granada (Cuming coll.). 



Bulimus dillwynianm PFR., P. Z. S., 1851, p. 258 ; Conchyl. Cab., 

 p. 88, pi. 30, f. 25, 26 ; Monogr., iii, p. 372. 



This species I have not seen. Compare A. midas var. spectrum 

 Alb., which is similar in form and coloring ; but Pfeiffer says dill- 

 wyniana is solid, rudely striate and irregularly malleated. The 

 rather indefinite habitat assigned lies out of the range of other mem- 

 bers of this group. 



